Hi Gabby,
I have found the solution by my self (with google help
).
I got a better understanding of the subject after reading this article:
add-list-certficates-java-keystore.html on javarevisited.blogspot.fr (2012/03)
(the forum does not want me to post link directly)
So I did the adding on my local Java KeyStore.
Put a tRESTClient on my Talend job.
Enterer parameters (Trustore path's and password).
Linked it to the tRESTClient component.
Launched the job and it worked!!!
Solved for me
So let's thank Javin Paul for his excelent post!